SPID - OCN Reference Contains: Legal Names State OCN ICSC EC CCNA/IAC ACNA CIC FGD Code

Legacy Service Territory: Pages 2 - 5 Acquired West Virginia Service Territory Page 6 Frontier 13 Service Territory Page 7 Connecticut Service Territory Page 8

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© 2021 Frontier Communications Corporation – All Rights Reserved. Frontier Communications Legal Names, ICSC, EC, IAC, CIC Codes Legacy Service Territory State Legal Entity Company Name State OCN ICSC EC CCNA/IAC ACNA CIC FGD CODE SPID AL Frontier Communications of Alabama, LLC 0306 MR01 CZUC CZX FLR 0694 0121 AL Frontier Communications of Lamar County, LLC 0301 IS14 CZUC CZX FLR 0694 0121 AL Frontier Communications of the South, LLC (overall OCN 0318) 4464 SL01 CZUC CZX FLR 0694 0121 AL Frontier Communications of America, Inc - CLEC 039E FC11 CZUC CZX FLR 0694 N/A Citizens Utilities Rural Company, Inc. dba Frontier AZ Telecommunictions 2172 CU03 CZUC CZX FLX 0096 0121 Citizens Telecommunications Company of the White Mountains, AZ Inc. - East 4426 CZ05 CZUC CZX FLX 0096 0121 AZ Navajo Communications Company, Inc. - AZ (overall OCN 2275) 4449 CZ05 CZUC CZX FLX 0096 0121 AZ Frontier Communications of America, Inc - CLEC 096F FC11 CZUC CZX FLR 0694 N/A AZ Citizens Mohave Cellular Company - CLEC (Kingman) 6831 FC11 CZUC CZX FLR 0694 N/A

CA Citizens Telecommunications Company of California, Inc. - North 2308 CZ02 CZUC CZX FLX 0096 0121 Citizens Telecommunications Company of the Golden State - CA Needles CO 3402 CZ05 CZUC CZX FLX 0096 0121 Citizens Telecommunications Company of Tuolumne dba Frontier CA Telecom 2342 CZ05 CZUC CZX FLX 0096 0121 Global Valley Networks, Inc. dba Frontier Communications Global CA Valley 2315 IW29 CZUC CZX FLX 0096 0121 CA Frontier Communications of America, Inc - CLEC 006E FC11 CZUC CZX FLR 0694 2473 FL Frontier Communications of the South, LLC (overall OCN 0318) 4465 SL01 CZUC CZX FLR 0694 0121 FL Frontier Communications of America, Inc - CLEC 2476 FC11 CZUC CZX FLR 0694 N/A GA Frontier Communications of Fairmount, LLC 0362 IS36 CZUC CZX FLR 0694 0121 GA Frontier Communications of Georgia, LLC 0387 ST03 CZUC CZX FLR 0694 0121 GA Frontier Communications of America, Inc - CLEC 253E FC11 CZUC CZX FLR 0694 N/A IA Frontier Communications of Iowa, LLC 1127 VI20 CZUC CZX FLR 0694 0121 IA Frontier Communications of America, Inc - CLEC 198E FC11 CZUC CZX FLR 0694 N/A Citizens Telecommunications Company of Illinois dba Frontier IL Telecomm 1183 CZ05 CZUC CZX FLX 0096 0121 Frontier Communications of Depue, Inc. dba Frontier IL Telecommunications 0998 IB79 CZUC CZX FLR 0694 0121 Frontier Communications of Illinois, Inc. dba Frontier IL Telecommunications 1038 IB94 CZUC CZX FLR 0694 0121 Frontier Communications of Lakeside, Inc. dba Frontier IL Telecommunications 1011 IB97 CZUC CZX FLR 0694 0121

© 2019 Frontier Communications Corporation – All Rights Reserved. 2 Revised: 01/26/2020 Frontier Communications Legal Names, ICSC, EC, IAC, CIC Codes Legacy Service Territory State Legal Entity Company Name State OCN ICSC EC CCNA/IAC ACNA CIC FGD CODE SPID Frontier Communications - Midland, Inc. dba Frontier IL Telecommunications 1055 IA04 CZUC CZX FLR 0694 0121 Frontier Communications of Mt. Pulaski, Inc.dba Frontier IL Telecomm 1061 IA07 CZUC CZX FLR 0694 0121 Frontier Communications of Orion, Inc.dba Frontier IL Telecommunications 1067 IA13 CZUC CZX FLR 0694 0121 Frontier Communications - Prairie, Inc.dba Frontier IL Telecommunications 1073 IA14 CZUC CZX FLR 0694 0121 Frontier Communications - Schuyler, Inc.dba Frontier IL Telecommunications 1079 IA16 CZUC CZX FLR 0694 0121 IL Frontier Communications of America, Inc - CLEC 807E FC11 CZUC CZX FLR 0694 N/A IN Frontier Communications of Indiana LLC 0750 ID35 CZUC CZX FLR 0694 0121 IN Frontier Communications of Thorntown LLC 0828 ID60 CZUC CZX FLR 0694 0121 IN Frontier Communications of America, Inc - CLEC 474E FC11 CZUC CZX FLR 0694 2473 MI Frontier Communications of Michigan, Inc (overall OCN 0682) 4417 CI75 CZUC CZX FLR 0694 0121 MI Frontier Communications of America, Inc - CLEC 475E FC11 CZUC CZX FLR 0694 N/A

MN Citizens Telecommunications Company of Minnesota, LLC - Lakes 1123 CZ05 CZUC CZX FLX 0096 0121 MN Frontier Communications of Minnesota, Inc. 1367 VI10 CZUC CZX FLR 0694 0121 MN Frontier Communications of America, Inc - CLEC 2474 FC11 CZUC CZX FLR 0694 2473 MS Frontier Communications of Mississippi LLC 0460 IS88 CZUC CZX FLR 0694 0121 MS Frontier Communications of America, Inc - CLEC 544E FC11 CZUC CZX FLR 0694 N/A NC Frontier Communications of America, Inc - CLEC 440G FC11 CZUC CZX FLR 0694 2473 Citizens Telecommunications Company of Nebraska dba Frontier NE Telecomm 1128 CZ05 CZUC CZX FLX 0096 0121 NE Frontier Communications of America, Inc - CLEC 674E FC11 CZUC CZX FLR 0694 N/A Navajo Communications Company, Inc. - NM dba Frontier NM Telecom (overall OCN 2275) 4450 CZ05 CZUC CZX FLX 0096 0121 NM Frontier Communications of America, Inc - CLEC 901E FC11 CZUC CZX FLR 0694 N/A Citizens Telecommunications Company of Nevada dba Frontier NV Telecomm 2354 CZ05 CZUC CZX FLX 0096 0121 NV Frontier Communications of America, Inc - CLEC 254E FC11 CZUC CZX FLR 0694 N/A NY Citizens Telecommunications Company of New York, Inc. 0096 CZ05 CZUC CZX FLX 0096 0121 NY Ogden Telephone Company dba Frontier Telecommunications 0110 OT01 OGEN CZX FLR 0694 0121 NY Frontier Communications of AuSable Valley, Inc. - NY North 0072 AU01 CZUC CZX FLR 0694 0121 NY Frontier Communications of New York, Inc.- NY South Monroe 0100 HT05 CZUC CZX FLR 0694 0121

© 2019 Frontier Communications Corporation – All Rights Reserved. 3 Revised: 01/26/2020 Frontier Communications Legal Names, ICSC, EC, IAC, CIC Codes Legacy Service Territory State Legal Entity Company Name State OCN ICSC EC CCNA/IAC ACNA CIC FGD CODE SPID NY Frontier Telephone of Rochester, Inc. - NY Rochester 0121 RT01 CZUC CZX FLR 0694 0121 Frontier Communications of Seneca-Gorham, Inc. - NY West & NY Central 0122 SG01 CZUC CZX FLR 0694 0121

NY Frontier Communications of Sylvan Lake, Inc. - NY South Monroe 0128 SL02 CZUC CZX FLR 0694 0121 NY Frontier Communications of America, Inc - CLEC 2475 FC11 CZUC CZX FLR 0694 2473 Frontier Communications of Michigan, Inc - OH (Overall OCN OH 0682) 4418 IB37 CZUC CZX FLR 0694 0121 PA Citizens Telecommunications Company of New York, Inc. 0096 CZ05 CZUC CZX FLX 0096 0121 PA Frontier Communications of Breezewood, LLC 0149 BT02 CZUC CZX FLR 0694 0121 PA Frontier Communications of Canton, LLC 0152 CA03 CZUC CZX FLR 0694 0121 Commonwealth Telephone Company LLC dba Frontier PA Telecommunications 0161 CT99 CMWL CZX FBA 5326 0161 PA Frontier Communications of Lakewood, LLC 0178 LR01 CZUC CZX FLR 0694 0121 PA Frontier Communications of Oswayo River, LLC 0194 OR03 CZUC CZX FLR 0694 0121 PA Frontier Communications of Pennsylvania, LLC 0168 EN01 CZUC CZX FLR 0694 0121 PA Frontier Communications of America, Inc - CLEC 3324 FC11 CZUC CZX FLR 0694 N/A PA CTSI, LLC - Harrisburg, Wilkes Barre, Plains 7513 CS35 CWTS CQV CQV 5342 7513 Citizens Telecommunications Company of Tennessee dba Frontier TN Telecomm 4336 CZ05 CZUC CZX FLX 0096 0121 Citizens Telecommunications of the Volunteer State, LLC dba TN Frontier Telecomm 0577 CZ05 CZUC CZX FLX 0096 0121 TN Frontier Communications of America, Inc - CLEC 866C FC11 CZUC CZX FLR 0694 N/A Citizens Telecommunications Company of Utah dba Frontier UT Telecomm 4429 CZ05 CZUC CZX FLX 0096 0121 Navajo Communications Company, Inc. - UT dba Frontier Telecom UT (overall OCN 2275) 4451 CZ05 CZUC CZX FLX 0096 0121 UT Frontier Communications of America, Inc - CLEC 817E FC11 CZUC CZX FLR 0694 N/A VA Frontier Communications of Virginia, Inc 127G FV01 FV01 FVX FLX 0096 0121 Rhinelander Telecommunications, LLC - Crandon dba Frontier WI Telecomm 0870 CI38 CZUC CZX FLR 0694 0121 WI Frontier Communications of Mondovi, LLC 0912 CI24 CZUC CZX FLR 0694 0121 WI Frontier Communications - St. Croix, LLC 0944 CI42 CZUC CZX FLR 0694 0121 WI Frontier Communications of Viroqua, LLC 0967 CI63 CZUC CZX FLR 0694 0121 WI Frontier Communications of Wisconsin, LLC 0964 CI60 CZUC CZX FLR 0694 0121 WI Frontier Communications of America, Inc - CLEC 593E FC11 CZUC CZX FLR 0694 N/A

© 2019 Frontier Communications Corporation – All Rights Reserved. 4 Revised: 01/26/2020 Frontier Communications Legal Names, ICSC, EC, IAC, CIC Codes Legacy Service Territory State Legal Entity Company Name State OCN ICSC EC CCNA/IAC ACNA CIC FGD CODE SPID Citizens Telecommunications of West Virginia dba Frontier WV Telecomm 0270 CZ05 CZUC CZX FLX 0096 0121 WV Frontier Communications of America, Inc - CLEC 007E FC11 CZUC CZX FLR 0694 N/A

State Legal Entity Company Name State OCN ICSC EC CCNA/IAC ACNA CIC FGD CODE SPID WV Frontier West Virginia, Inc - LERG OCN 9214, NECA OCN 5050 9214 FV01 FVNC FVX FLX 0096 0121

State Legal Entity Company Name State OCN ICSC EC CCNA/IAC ACNA CIC FGD CODE SPID AZ Frontier Communications of the Southwest, Inc 4419 FV04 FTNC FFT CQV 5342 0121 CA Frontier Communications West Coast, Inc 2344 FV02 FTNC FFT CQV 5342 0121 CA Frontier Communications of the Southwest, Inc 863F FV04 FTNC FFT CQV 5342 0121 IL Frontier Communications of the Carolinas, Inc 1000 FV05 FTNC FFT CQV 5342 0121 IL Frontier North, Inc 1015 FV06 FTNC FFT CQV 5342 0121 IL Frontier North, Inc 1036 FV06 FTNC FFT CQV 5342 0121 IN Frontier North, Inc 0772 FV06 FTNC FFT CQV 5342 0121 IN Frontier North, Inc 0779 FV06 FTNC FFT CQV 5342 0121 IN Frontier Midstates, Inc 0831 FV07 FTNC FFT CQV 5342 0121 MI Frontier Midstates, Inc 0681 FV07 FTNC FFT CQV 5342 0121 MI Frontier North, Inc 0695 FV06 FTNC FFT CQV 5342 0121 NC Frontier Communications of the Carolinas, Inc 4334 FV05 FTNC FFT CQV 5342 0121 NC Frontier Communications of the Carolinas, Inc 0509 FV05 FTNC FFT CQV 5342 0121 NV Frontier Communications of the Southwest, Inc 4421 FV04 FTNC FFT CQV 5342 0121 OH Frontier North, Inc 0615 FV06 FTNC FFT CQV 5342 0121 SC Frontier Communications of the Carolinas, Inc 0526 FV05 FTNC FFT CQV 5342 0121 SC Frontier Communications of the Carolinas, Inc 4335 FV05 FTNC FFT CQV 5342 0121 WI Frontier North, Inc 0886 FV06 FTNC FFT CQV 5342 0121 *CA Frontier California, Inc 2319 GT10 FTNC FFT CQV 5342 0121 *CA Frontier California, Inc 4420 GT11 FTNC FFT CQV 5342 0121 *CA Frontier California, Inc - CLEC 7534 GT10 FTNC FFT CQV 5342 N/A *FL Frontier Florida LLC d/b/a Frontier Communications of Florida 0328 GT10 FTNC FFT CQV 5342 0121 *TX Frontier Southwest Incorporated d/b/a Frontier Communications of Texas2154 GT11 FTNC FFT CQV 5342 0121 *TX Frontier Southwest Incorporated d/b/a Frontier Communications of Texas4344 GT10 FTNC FFT CQV 5342 0121 *TX Frontier Southwest Incorporated d/b/a Frontier Communications of Texas0701 - CLECGT10 FTNC FFT CQV 5342 0121

* CTF Properties Acquired in 2016

State Legal Entity Company Name State OCN ICSC EC CCNA/IAC ACNA CIC FGD CODE SPID CT Southern New England Telephone Company 9147 SN01 SN SNG SNG 0763 5200